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Finding the Fourth Proportional to 28,677.65, 43,022.54 and 8,957.69

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Solution

The fourth proportional to 28,677.65, 43,022.54 and 8,957.69 is: 13,438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.65 : 43,022.54 = 8,957.69 : x
  2. Step 2: Convert to fraction form
    28,677.65/43,022.54 = 8,957.69/x
  3. Step 3: Cross multiply
    28,677.65x = 43,022.54 × 8,957.69
  4. Step 4: Simplify right side
    28,677.65x = 385,382,544.95
  5. Step 5: Solve for x
    x = 385,382,544.95/28,677.65
  6. Step 6: Final answer
    x = 13,438.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.